MetaCyc Pathway: zymosterol biosynthesis in Rhodosporidium toruloides IFO0880

Add experiment(s):


lanosterol + 3 dioxygen + 3 a reduced [NADPH-hemoprotein reductase]→4,4-dimethyl-5-α-cholesta-8,14,24-trien-3-β-ol + formate + 3 an oxidized [NADPH-hemoprotein reductase] + H+ + 4 H2O (EC 1.14.14.154)
No genes
Delta(14)-sterol reductase (in reverse):
4,4-dimethyl-5-α-cholesta-8,14,24-trien-3-β-ol + NADPH + H+→14-demethyllanosterol + NADP+
(EC 1.3.1.70)
No genes
14-demethyllanosterol + 6 a ferrocytochrome b5 + 3 dioxygen + 5 H+→4α-carboxy-4β-methyl-5α-cholesta-8,24-dien-3β-ol + 6 a ferricytochrome b5 + 4 H2O (EC 1.14.18.9)
mRNA_8272 (16640)
Sterol-4-alpha-carboxylate 3-dehydrogenase (decarboxylating):
4α-carboxy-4β-methyl-5α-cholesta-8,24-dien-3β-ol + NAD(P)+→3-dehydro-4-methylzymosterol + CO2 + NAD(P)H
(EC 1.1.1.170)
No genes
3-keto-steroid reductase (in reverse):
3-dehydro-4-methylzymosterol + NADPH + H+→4α-methyl-zymosterol + NADP+
(EC 1.1.1.270)
No genes
4α-methyl-zymosterol + 6 a ferrocytochrome b5 + 3 dioxygen + 5 H+→4α-carboxy-5α-cholesta-8,24-dien-3β-ol + 6 a ferricytochrome b5 + 4 H2O (EC 1.14.18.9)
mRNA_8272 (16640)
Sterol-4-alpha-carboxylate 3-dehydrogenase (decarboxylating):
4α-carboxy-5α-cholesta-8,24-dien-3β-ol + NAD(P)+→zymosterone + CO2 + NAD(P)H
(EC 1.1.1.170)
No genes
3-keto-steroid reductase (in reverse):
zymosterone + NADPH + H+→zymosterol + NADP+
(EC 1.1.1.270)
No genes

Links:

Candidate genes for each reaction are identified from best hits to MetaCyc; by matching EC numbers (which are assigned by TIGRFam, SEED, or best hits to KEGG); or by matching SEED roles to KEGG reactions to MetaCyc reactions. See the "Protein" tab of each gene for more information